Making a ClockAccurate Sundial Customized to Your Location (for the Northern Hemisphere),Used
Making a ClockAccurate Sundial Customized to Your Location (for the Northern Hemisphere),Used
Making a ClockAccurate Sundial Customized to Your Location (for the Northern Hemisphere),Used

Making a ClockAccurate Sundial Customized to Your Location (for the Northern Hemisphere),Used

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SKU: SONG0879612460
Brand: Naturegraph Publishers, Inc.
Sale price$12.32 Regular price$17.60
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It is simple and inexpensive to make a clockaccurate sundial, and superior to mass produced sundials. Sam Muller's modern sundial is an amazing scientific tool. By its shadow you cn read correct clock time, and also observe the effects of the earth's tilt, rotation, and changing orbital speed. Then on a moonlit night from the shadow cast on your now "moondial" you will notice the moon's counterclockwise orbit of the earth shows a small loss of time hour after hour, explaning why a lunar month is more than a day shorter than a solar month. During his long career as a science teacher and educator, Mr. Muller has inspired many young minds with the wonders of science.

⚠️ WARNING (California Proposition 65):

This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

For more information, please visit www.P65Warnings.ca.gov.

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